22043142545 has 8 divisors (see below), whose sum is σ = 26479533096. Its totient is φ = 17616006016.

The previous prime is 22043142491. The next prime is 22043142547. The reversal of 22043142545 is 54524134022.

It can be written as a sum of positive squares in 4 ways, for example, as 25331089 + 22017811456 = 5033^2 + 148384^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22043142545 - 2⁶ = 22043142481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22043142547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2308262 + ... + 2317791.

It is an arithmetic number, because the mean of its divisors is an integer number (3309941637).

Almost surely, 2^22043142545 is an apocalyptic number.

It is an amenable number.

22043142545 is a deficient number, since it is larger than the sum of its proper divisors (4436390551).

22043142545 is an equidigital number, since it uses as much as digits as its factorization.

22043142545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4627011.

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 22043142545 its reverse (54524134022), we get a palindrome (76567276567).

The spelling of 22043142545 in words is "twenty-two billion, forty-three million, one hundred forty-two thousand, five hundred forty-five".